/* 全局滚动条样式 */
::-webkit-input-placeholder {
    color: #ccc
}

::-webkit-scrollbar-track-piece {
    -webkit-border-radius: 0;
    background-color: transparent
}

::-webkit-scrollbar {
    width: 7px;
    height: 7px
}

::-webkit-scrollbar-thumb {
    cursor: pointer;
    height: 50px;
    outline: 2px solid #8789876e;
    outline-offset: -2px;
    -webkit-border-radius: 6px;
    background-color: #8789877b;
    opacity: .5;
}

::-webkit-scrollbar-thumb:hover {
    height: 50px;
    -webkit-border-radius: 6px;
    background-color: #878987a4
}